JPH0444734A - Suction force instantaneous stop device for vacuum cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a suction force instantaneous stop device for a vacuum cleaner, which has a function of instantaneously stopping the suction force when the suction port becomes clogged.

BACKGROUND OF THE INVENTION Generally speaking, vacuum cleaners of the vacuum suction type are the mainstream. Conventionally, this type of device generally had a configuration as shown in FIG. The configuration will be described below with reference to the drawings.

As shown in the figure, a main body 1 is provided with a motor 3 directly connected to a fan 2 and a dust collection chamber 4. A hose 5 is connected to the suction side of the fan 2, and its tip is connected to an extension pipe 7 connected to a suction part 6. An operating section 8 is provided between the hose 6 and the extension pipe 7. The operating section 8 has a switch 9 for controlling the motor 3 to turn on and off.

With the above configuration in place, when switch 9 is turned on, motor 3
The fan 2 rotates, and air is sucked in from the suction section 6 to suck out dust.

Problems to be Solved by the Invention In such a conventional vacuum cleaner, when the suction part 6 is clogged with foreign matter and the cleaning is obstructed, the switch 9 stops the motor 3fr, removes the foreign matter, and restarts the vacuum cleaner. Motor 3 is operated, but until motor 3 stops, 1
Because it takes more than 0 seconds.

The problem was that I had to wait.

The present invention solves the above problem, and provides an instant suction stop device for a vacuum cleaner that can instantly stop the suction action of the fan when the suction part is clogged with foreign matter. is intended to provide.

Section M and Means for Solving In order to achieve the above-mentioned object, the first means for solving the problem is to provide an on-off valve in the ventilation path connecting the dust collection section and the fan, and to operate this on-off valve. Along with installing a solenoid,
A switch is provided to switch between the fan motor and the solenoid.As a second means of solving the problem, the switch is a normally closed contact and is provided between the solenoid and the power source. The third problem-solving means is provided with an opening/closing contact for a time switch between the solenoid and the switch.

The function of the first problem-solving means described above is that the ventilation passage can be instantly blocked by the opening/closing operation of the solenoid, and the second problem-solving means operates as follows: when the switch is changed, the motor continues to operate. The third problem-solving means works as follows: the switch and the switching motor run as they are, instantly closing the ventilation path, and a few seconds later, the time switch contact opens.
The ventilation path is opened again.

Embodiment FIGS. 1 and 2 show an embodiment related to the means for solving the first problem of the present invention. In this embodiment, the same components as those shown in the above-mentioned conventional example are given the same reference numerals, and the explanation thereof will be omitted. The characteristic configuration of this embodiment is that an on-off valve 111 is provided in the ventilation passage 10 section. In other words, inside the main body 1 there is a motor 3 directly connected to the fan 2.
A ventilation passage 10 is provided between the fan 2 and the dust collection chamber 4, and the ventilation passage 10 is provided with an on-off valve 11 for blocking air. Both ends of the on-off valve 11 are supported by a shaft 12, one of which is fixed to an operating rod 13,
The tip of this operating rod 13 is connected to a movable piece 16 of a solenoid 14. The operating rod 13 is biased by a spring 16, and always maintains the on-off valve 11 in an open state (position A). As shown in the circuit diagram of FIG. 2, the solenoid 14 is operated by a switch 17 provided in the operating section 8.
This switch 17 is operated by the motor 3.
and the solenoid 14 to energize.

In the above configuration, when the motor 3 is operated to clean, and when foreign matter is sucked into the suction part 6 every fourth time, and the dust cannot be sucked, pressing the switch 17 provided on the operation part 8,
The solenoid 1 is switched to the 4 side υ, and the movable piece 16 of the solenoid 14 operates the action rod 13 to close the on-off valve 11 (position B), blocking the υ1 ventilation passage 10. The suction part 6 is no longer in a reduced pressure state, and the foreign matter sucked into the suction part 6 can be removed and the switch 17 can be pressed again to restore the original state. When foreign matter is sucked into the suction section 6 by blocking the ventilation passage 10 with the solenoid 14 in this way, the ventilation passage 10 can be instantly closed and the foreign matter removed by hand operation.

FIG. 3 is a nine-circuit diagram showing an embodiment related to the means for solving the second problem of the present invention. In the figure, parts with the same numbers as in FIG. 2 are the same. The difference from the first problem-solving means described above is that the switch 18 is a single-pole, single-throw contact and is installed between the solenoid 14 and the power source. According to this configuration, when the switch 18 is pressed, the solenoid 14 The air passage 10 is closed and the suction section 6 is no longer in a reduced pressure state, and at this time the motor 3 is always in the operating state. This configuration has a simple structure and is economical. - FIG. 4 shows an embodiment related to the means for solving the third problem of the present invention. In the figure, parts with the same numbers as in FIG. 3 are the same. The difference from the above-mentioned 2c1 problem solving means is the solenoid 14.
The advantage is that the normally closed contact 2o of the time switch 19 is provided in the side circuit. According to this configuration, when the switch 181 is pressed, only the solenoid 14 operates to close the ventilation passage 10 and the suction part 6 is no longer in a depressurized state. At this time, the motor 3 is always in operation, and the normally closed contact 20 opens after the time set in the timer, the solenoid 14 is de-energized, and the on-off valve 11 is opened (position A). )become. This configuration has the advantage that opening and closing operations are automatic.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, an on-off valve is provided in the ventilation path connecting the dust collection section and the fan, a solenoid is provided to operate this on-off valve, and the fan By providing a switch to change over the motor and solenoid, when a foreign object is sucked into the suction part, the ventilation can be instantly shut off with a hand operation, making it easy to remove the foreign object, making it easier to use. I can do it.

[Brief explanation of drawings]

FIG. 1 is a sectional view of main parts of an instantaneous suction force stop device for a vacuum cleaner according to an embodiment of the first problem-solving means of the present invention, and FIG.
3 is a circuit diagram of an instantaneous suction stop device for the vacuum cleaner, FIG. 3 is a circuit diagram of an instant suction stop device for a vacuum cleaner according to an embodiment of the second problem-solving means of the present invention, and FIG. 6 is a circuit diagram of an instantaneous suction force stopping device for a vacuum cleaner according to an embodiment of the third problem-solving means of the present invention, and FIG. 6 is an external perspective view of a conventional vacuum cleaner. 1o...Ventilation passage, 11...Opening/closing valve, 1
4... Solenoid. Name of agent: Patent attorney Shigetaka Awano and one other person; Figure

Claims (3)

[Claims] (1) An on-off valve is provided in the ventilation passage connecting the dust collection section and the fan, and a solenoid is provided to operate this on-off valve.
A suction force instantaneous stop device for a vacuum cleaner, which is equipped with a switch for switching between the fan motor and the solenoid. (2) The suction force instantaneous stop device for a vacuum cleaner according to claim 1, further comprising a switch provided between the solenoid and the power source. (3) The suction force instantaneous stop device for a vacuum cleaner according to claim 2, further comprising an opening/closing contact of a time switch provided between the solenoid and the switch.